Maretron J2K100-01 Owner's Manual
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Maretron J2K100-01 Owner's Manual

J1939 to nmea 2000 gateway
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® ®
J2K100
J1939 to NMEA 2000
Gateway
®
Owner's Manual
Revision 1.3
Warning: Improper installation of the Maretron J2K100 may prevent existing engine
accessories (i.e., engine gauge displays, key switches, throttle and shift controls, etc.) from
working properly. You must have an understanding of J1939 data networks before attempting
to install the J2K100. Maretron strongly recommends that you understand SAE documents
J1939-11 and J1939-15 (see Section 3.1 of Appendix B) before attempting to install the
J2K100 and that you consult the engine/genset manufacture for their recommendations before
connecting anything to the J1939 network.
Revision 1.3

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Summary of Contents for Maretron J2K100-01

  • Page 1 (i.e., engine gauge displays, key switches, throttle and shift controls, etc.) from working properly. You must have an understanding of J1939 data networks before attempting to install the J2K100. Maretron strongly recommends that you understand SAE documents J1939-11 and J1939-15 (see Section 3.1 of Appendix B) before attempting to install the J2K100 and that you consult the engine/genset manufacture for their recommendations before connecting anything to the J1939 network.
  • Page 2 Added warning on cover page Miscellaneous editorial changes Added Appendix B Changed cable part numbers in Appendix B to reflect new Maretron part #’s Inserted new figure showing J1939 connection diagram Added new translations to Section 5 (Technical Specifications) Updated Mounting Drawings and Mounting Template for new (black) enclosure...

  • Page 3: Table Of Contents

    ® ® Table of Contents 1 Introduction ..........................1 1.1 Firmware Revision ....................1 1.2 J2K100 Features ...................... 1 1.3 Quick Install ......................1 2 Installation ..........................2 2.1 Unpacking the Box ....................2 2.2 Choosing a Mounting Location ................. 2 2.3 Mounting the J2K100 ....................

  • Page 4: Introduction

    Congratulations on your purchase of the Maretron J1939 to NMEA 2000 Gateway (J2K100). Maretron has designed and built your gateway to the highest standards for years of dependable and accurate service. Maretron’s J2K100 is a gateway for bridging J1939-equipped engines and gensets with an ®...

  • Page 5: Installation

    J2K100 User’s Manual 2 Installation 2.1 Unpacking the Box When unpacking the box containing the Maretron J2K100, you should find the following items: ® 1 – J2K100 - J1939 to NMEA 2000 Gateway 4 – Mounting Screws 1 – Female Micro Field-Attachable Connector (For connecting J1939 interface) 1 –...

  • Page 6: Connecting The J2K100

    Section 2.4.2 for making the J1939 connection. Additional information can be found in Appendix B - Interfacing J1939 Engines and/or Gensets ® ® to an NMEA 2000 Network Using Maretron’s J1939 to NMEA 2000 Gateway (J2K100). ® NMEA 2000 connector ®...

  • Page 7: Connecting The J2K100 Nmea 2000 ® Interface

    ® ® to an NMEA 2000 network using a Maretron NMEA 2000 cable (or compatible cable) by connecting the female end of the cable to the J2K100 (note the key on the male connector and keyway on the female connector). Be sure the cable is connected securely and that the collar on the cable connector is tightened firmly.

  • Page 8: Checking Connections

    J1939 device with a source address of zero. If the J1939 source address of the engine, transmission, or genset to be monitored is different than zero, then the J2K100 must be programmed with the appropriate J1939 source address. This can be done with the Maretron ®...

  • Page 9: Nmea 2000

    ® the J2K100 does not transmit J1939 diagnostic messages over the NMEA 2000 network. If this behavior is desired, it may be enabled with the Maretron DSM200 or DSM250 display or ® other NMEA 2000 display unit that is capable of configuring the J2K100. Please refer to the Maretron DSM200 User’s Manual or DSM250 User’s Manual, as appropriate, for details.

  • Page 10: Maintenance

    ® ® is capable of configuring the J2K100. Please refer to the Maretron DSM200 User’s Manual or DSM250 User’s Manual, as appropriate, for details. 3 Maintenance Regular maintenance is important to ensure continued proper operation of the Maretron J2K100. Perform the following tasks periodically: •...

  • Page 11: Technical Specifications

    Maretron service location. 5 Technical Specifications As Maretron is constantly improving its products, all specifications are subject to change without notice. Maretron products are designed to be accurate and reliable; however, they should be used only as aids to navigation and not as a replacement for traditional navigation aids and techniques.

  • Page 12: Nmea 2000 ® Pgn Enable/Disable

    ® ® ® J1939 Data Translated to NMEA 2000 Data ® J1939 SPN/PGN Description NMEA 2000 190 / 61444 Engine Speed 127488 102 / 65270 Engine Turbocharger Boost Pressure 127488 100 / 65263 Engine Oil Pressure 127489 175 / 65262 Engine Oil Temperature 1 127489 110 / 65262...
  • Page 13 J2K100 User’s Manual Maretron Proprietary PGN’s 128720 Configuration Electrical Parameter Value Comment Operating Voltage 9 to 16 Volts DC Voltage Power Consumption <150mA Average Current Drain ® Load Equivalence Number (LEN) NMEA 2000 Spec. (1LEN = 50 mA) Reverse Battery Protection...

  • Page 14: Installation Template

    ® ® Installation Template Please check the dimensions before using the following diagram as a template for drilling the mounting holes because the printing process may have distorted the dimensions. Figure 5 – Mounting Surface Template Revision 1.3 Page 11...
  • Page 15 ® ® ® Appendix A – NMEA 2000 Interfacing ® J2K100 NMEA 2000 Periodic Data Transmitted PGNs PGN 127488 – Engine Parameters, Rapid Update The J2K100 uses this PGN to transmit rapidly changing engine data. Field 1: Engine Instance – This field indicates the particular engine for which this data applies.
  • Page 16 J2K100 User’s Manual 9: Fuel Pressure – This field indicates the pressure of the engine fuel in units of 1000 10: Reserved – This field is reserved by NMEA; therefore, the J2K100 sets all bits to a logic 1. 11: Engine Discrete Status 1 – This field indicates warning conditions of the engine with the following bit assignments (value of 1 indicates warning present): Bit 0: Check Engine Bit 1: Over Temperature...
  • Page 17 ® ® engines are numbered starting from the port side and proceeding towards the starboard side. 2: Rated Engine Speed – This field indicates the maximum rated rotational speed of the engine in units of ¼ RPM. 3: VIN – This field indicates the Vehicle Identification Number of the engine as a textual representation.
  • Page 18 J2K100 User’s Manual 3: Generator Average AC RMS Frequency – This field indicates the average frequency of the generated power measured at the generator output in units of 1/128 Hz. 4: Generator Average RMS Current – This field indicates the average current measured at the generator output in units of 1 Ampere.

  • Page 19: Appendix B - Application Note

    (i.e., engine gauge displays, key switches, throttle and shift controls, etc.) from working properly. You must have an understanding of J1939 data networks before attempting to install the J2K100. Maretron strongly recommends that you understand SAE documents J1939-11 and J1939-15 (see Section 3.1 of this appendix) before attempting to install the J2K100 and that you consult the engine/genset manufacturer for their recommendations before connecting anything to the J1939 network.
  • Page 20 J2K100 User’s Manual Table of Contents Introduction ........................B3 ® NMEA 2000 Network Basics ................... B3 J1939 Network Basics ....................... B4 3.1 SAE J1939 Recommended Cabling and Connectors ........... B5 Determining J1939 Network Type ..................B5 4.1 Single Engine/Genset, No J1939 Network Installation ......... B5 4.2 Single Engine/Genset, Single J1939 Network Installation ........

  • Page 21: Introduction

    , which is used for navigation information as well as other vessel data such as engine information. These two networks are now beginning to coincide more and more on vessels and Maretron has developed a gateway for bridging the two networks ®...

  • Page 22: J1939 Network Basics

    J2K100 User’s Manual 3 J1939 Network Basics ® Like an NMEA 2000 network, a J1939 network is based on Controller Area Network (CAN) technology. A CAN network consists of two or more nodes, and for J1939 networks, they usually include one or more engines and the corresponding engine displays. In addition to the nodes or electronic boxes, a CAN network consists of the cabling system, which is used to Ω...

  • Page 23: Sae J1939 Recommended Cabling And Connectors

    J2K100 with the J1939 network. 4 Determining J1939 Network Type Before installing Maretron’s J2K100, it is imperative to understand the type of J1939 network you are dealing with, which may be one of the following: 1.
  • Page 24 After completing the physical connections, you will need to configure the J2K100 so it responds to the appropriate J1939 address. Most single engine installs have the J1939 address set to 0, but not always, so check with the engine manufacturer and use a Maretron ®...

  • Page 25: Single Engine/Genset, Single J1939 Network Installation

    After completing the physical connections, you will need to configure the J2K100 so it responds to the appropriate J1939 address. Most single engine installs have the J1939 address set to 0, but not always, so check with the engine manufacturer and use a Maretron ®...

  • Page 26: Two Engines/Gensets, No J1939 Network Installation

    J2K100 User’s Manual ® NMEA 2000 instance to be set to 0. Again, you can use a Maretron display to program the ® appropriate NMEA 2000 instance. Refer to the J2K100 User’s Manual (Section 2.5) for a detailed of configuring a J2K100.

  • Page 27: Two Engines/Gensets, Single J1939 Network Installation

    J1939 address set to 0 and the starboard engine J1939 address set to 1, but not ® always, so check with the engine manufacturer and use a Maretron NMEA 2000 display (DSM200/DSM250) to program the J2K100s with the corresponding J1939 address. On the ®...

  • Page 28: Two Engines/Gensets, Dual J1939 Networks Installation

    For illustration purposes, the J1939 network in Figure 8 shows the J2K100 drops or stubs (i.e., connection between J1939 network and Maretron J2K100s) as a two wire or twisted pair cable. The network wiring actually requires three wires, two CAN bus signals (usually designated CAN-H and CAN-L, usually yellow and green respectively) and a ground used as a reference (usually designated as CAN-SHLD).
  • Page 29 For illustration purposes, the J1939 network in Figure 8 shows the J2K100 drops or stubs (i.e., connection between J1939 network and Maretron J2K100s) as a two wire or twisted pair cable. The network wiring actually requires three wires: two CAN bus signals (usually designated CAN-H and CAN-L, usually yellow and green respectively), and a ground used as a reference (usually designated as CAN-SHLD).

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